Risk factors for cancer after a molar pregnancy

Abnormal tissue left behind after a molar pregnancy is removed can become cancerous. The risk of developing cancer is greater for women who have had a complete mole and any of the following conditions:1

  • An extremely large ovarian cyst
  • Many large ovarian cysts
  • High levels of the pregnancy hormone human chorionic gonadotropin (hCG)
  • Age over 40 years


  1. Berkowitz RS, Goldstein DP (2007). Gestational trophoblastic disease. In JS Berek, ed., Berek and Novak's Gynecology, 14th ed., pp. 1581–1603. Philadelphia: Lippincott Williams and Wilkins.

Last Updated: October 12, 2009

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